Regulator for alternating series arc-light systems.



No. 7l2,524. Patented Nov. 4. I902.

J. H. HALLBERG.

REGULATOR FOR ALTERNATING SERIES ABC LIGHT SYSTEMS.

(Application filed Jan. 29. 1902.,

(No Model.)

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' W. ATTORNEY T unnms PETERS co, moYuumo. wuulmma, D. c.

UNITED STATES PATENT OFFICE.

JOSEF IIENRIK I'IALLBERG, OF NEW YORK, N. Y., ASSIGNOR TO GENERAL INOANDESCENT ARC LIGHT COMPANY, OF NEV YORK, N. Y., A CORPO RATION.

REGULATOR FOR ALTERNATING SERIES ARC-LIGHTSYSTEMS.

SPECIFICATION forming part of Letters Patent No. 712,524, dated November 4, 1902.

Application filed January 29, 1902. Serial No. 91,736. (No model.)

T all LU/b07771 it m y Mil/067%: Assuming the switches 12 to the main line Be it known that I, JOSEF HENRIK IIALL- and the switches 14 and 15 of the signaling BERG, a citizen of the United States, residing devices 13 13 to be closed and the normal at New York city, county and State of New load in the circuit, the core 9 of the solenoid 5 York, have invented certain new and useful 5 will be slightly attracted, suflicient to cause ;5

Improvements in Regulators for Alternating the contact to leave the contact 21 and Series Arc-Light Systems,of which the followopen circuit through the signaling device 13. ing is a specification. Should now the load in the main line be de- My invention relates to a device adapted creased by, for instance, cutting out one or IO to be connected in series with the generators two lamps, the solenoid 5 will attract its core and arc-lights of an alternating series arcand introduce an impedance upon the linelight system and which has for its purpose circuit equal to the resistance of the lamps to maintain the current on the line constant or other devices cut out of the circuit. As irrespective of the numberof lampsin operathe resistance is cut out of the circuit the :5 tion. core 9 of the solenoid 5 continues to rise 6 A further object of my invention is to iuuntil the stop 17 is brought in contact with crease the safety and economy of such a systhe spring 16, where the movement of the tem by dividing the regulating apparatus core will be arrested. It further lamps are into two or more parts and providing means cut out, the tension of the spring 16 will be 20 whereby one of such parts will be operative overcome and contacts 20 22 brought toto effect the regulation required within cergether, which closes the circuit through the tain predetermined limits and both parts magnet and bell of the signaling device 13, should such limits be exceeded or one of the thereby giving notice to the attendant that two parts be by any means short-oircuited. the solenoid 5 has reached the limit of its 25 A further object of my invention is to proregulating capacity. IVhen the limit of the vide means for protecting the system against regulating capacity of the solenoid 5 has been the action of lightning. reached, the solenoid 6 comes into action and The accompanying diagram will serve to supplements its regulating capacity to that illustrate my invention, and in which similar of the solenoid 5. 30 characters indicate like parts. It is assumed that the regulating capacity In the drawing, 5 6 indicate two pairs of of the solenoids 5 and 6 will be sutficient to solenoidal magnets in series with an altertake care of any changes which may take nating generator 7 and arc-lamps 8 or other place in the line-circuit. similar devices. Each of these magnets is In case a ground should take place upon 35 provided with a core or armature 9 9, adthe circuit-forinstance, between the points justably counterbalanced through the coun- X and Ythe solenoid 5 and the lamps beterbalance apparatus 10 and dampened tween these points will be out out of circuit, against quick movement by the dash-pots 11. and the core 9 of this magnet would drop and 12 indicates switches which connect the contact will be made between the contacts 20 4o solenoids 5 and 6 to the main line; 13 13, and 21, closing the circuit through the magsignaling devices operated by the movement netand bell of the signaling device 13, thereof the cores 9; 14.- 15, switches, respectively, by giving notice to the attendant that there between the cores 9 and signaling devices 13 is a ground on the line. At such time the so- 13; 16, springson solenoid 5,which coact with lenoid 6 will immediately come into action 45 the plate 17 on core of the solenoid to preand lift its core 9 to elfect the required regu- 5 vent cutting in the signaling device 13 until lation. Should the regulation required be in the current on the line exceeds the normal excess of the capacity of the solenoid 6, its current; 18, lightning arrester, connected core will rise until the contact 23 touches the across the line and to ground at 19. contact 24, which will close a circuit through 50 The operation of my device is as follows: the magnet and bell of the signalingdevice 13 and indicate the fact to the attendant, who will then open a circuit, and thereby prevent thefuse ofthe main line blowing, or an automatic circuit-breaker could be thrown into operation by the closing of the circuit through such signaling device. 7

In case there should be a short circuit on the line between X and Z, the core 9 of the solenoid 6 will drop and close the circuit between the contacts 23 and 25, thereby closing the,cireuit through the magnet and bell of the signaling device 13, and thereby indicate such short circuit to the attendant.

In order to maintain the core 9 with the contacts 23 and 25' separated under normal conditions of operation, a springdevice 26 is located under the core and which will exert sufficient upward pressure to keep the contacts 23 and 25 normally separated.

To accomplish the results above stated, it is essential that the solenoid 5 be adjusted to impart movement toils core under variations of current strength which would not produce a corresponding movementin the core of the solenoid 6. In other words, the solenoid 5 should be adjusted to accomplish all the regulation between certain limits and solenoid 6 not to come into action until such limit has been exceeded.

It will be observed that by separating the regulating mechanism into two parts the factor of safety is materially increased, as it is improbable that any short circuit occurring on the line would include more than one part of the regulating device, leaving the other part in a condition to operate and effect the required regulation.

The operation of the lightning-arrester, which is connected across the lamp-circuit, will be readily comprehended by any electrician and need not be described.

Having thus described my invention, I claim 1. A regulator for alternating series arelight systems, comprising a device in series with the generator and the current-consumin g device, and having one portion responsive to any increase of current upon the line within predetermined limits and a portion which is only responsive to a current in excess of said limits, and which device will act when energized to introduce an impedance upon the line proportional to any decrease in load.

2. A regulator for alternating series arelight systems, comprising a device normally responsive to an increase of current upon the line, and which will act when energized to in troduce an impedance upon the line proportional to any decrease of load, a second similarly acting device normally irresponsive until the current upon the line exceeds a predetermined amount.

A regulator for alternating series arc-- light systems, comprising a solenoidal magnet provided with a movable core so designed and adjusted as to be operated by changes in current strength Within certain defined limits, a second solenoidal magnet provided with a movable core arranged and adjusted so as not to be acted upon within the limits of current at which the first named core is active but which will be acted upon by any current in excess of such limit and both of said magnets adapted when energized to introduce an impedance upon the line in which they are connected.

4. A regulator for alternating series arc- 

